Also known as basal Unit B
Where: Trego County, Kansas (39.1° N, 99.8° W: paleocoordinates 40.3° N, 97.2° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Ogallala Formation, Clarendonian (13.6 - 10.3 Ma)
• from a bed about 1 - 2 feet thick; overlies Locality 29 (see)
• bed-level stratigraphic resolution
Environment/lithology: "channel"; unlithified sandstone and green claystone
Size classes: macrofossils, mesofossils
Collection methods: bulk, surface (float), sieve,
Primary reference: R. L. Wilson. 1968. Systematics and faunal analysis of a Lower Pliocene vertebrate assemblage from Trego County, Kansas. Contributions from the Museum of Paleontology, University of Michigan 22(7):75-126 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 18450: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Richard Hulbert
Creative Commons license: CC BY (attribution)
Taxonomic list
Amphibia | |
Tregobatrachus hibbardi n. gen. n. sp.8
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Rana cf. areolata frog
Rana sp. Linnaeus 1758 frog | |
Acris sp., Pseudacris cf. clarki, Hyla sp., Hyla cf. cinerea8, Hyla cf. squirella8, Hyla cf. gratiosa
Acris sp. Dumeril and Bibron 1841 cricket frog
Pseudacris cf. clarki Baird 1854 spotted chorus frog
Hyla cf. gratiosa Le Conte 1856 barking treefrog | |
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Mammalia | |
"Tamiini indet." = Marmotini1
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"Phelosaccomys hibbardi" = Parapliosaccomys hibbardi11
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"Eucastor phillisi n. sp." = Prodipoides phillisi
"Eucastor phillisi n. sp." = Prodipoides phillisi Wilson 1968 beaver referred, includes "E. cf. tortus" of Hibbard and Phillis 1945; NISP about 19
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"Zapodinae indet." = Zapodidae Coues 1875 jumping mouse
? Sicistinae indet. Allen 1901 jumping mouse | |
Cricetidae indet., Cricetidae indet.1, cf. Copemys sp., "Tregomys shotwelli n. gen. n. sp." = Copemys shotwelli, "Tregomys pisinnus" = Copemys pisinnus1
Cricetidae indet. Fischer von Waldheim 1817 mouse
cf. Copemys sp. Wood 1936 mouse
"Tregomys shotwelli n. gen. n. sp." = Copemys shotwelli Wilson 1968 mouse includes type of "Gnomomys saltus"; (8+18)
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Talpidae indet., Domninoides mimicus n. sp.
Talpidae indet. Fischer de Waldheim 1817 mole | |
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Martes stirtoni n. sp. Wilson 1968 marten | |
Canidae indet. Fischer de Waldheim 1817 canid | |
Proboscidea indet. proboscidean | |
Reptilia | |
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"Chelonia indet." = Testudines8
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Tregophis brevirachis n. gen. n. sp.8
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Ogmophis pliocompactus n. sp.8
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Colubridae indet.8, Colubrinae indet.8, Elaphe sp.8, Lampropeltis similis8, Texasophis wilsoni n. sp.9, "Natrix hillmani" = Nerodia hillmani, Thamnophis sp., cf. Paleoheterodon sp., Paleoheterodon sp.8
"Natrix hillmani" = Nerodia hillmani Wilson 1968 water snake
Thamnophis sp. Fitzinger 1843 garter snake
cf. Paleoheterodon sp. Holman 1964 colubrid snake | |
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Eumeces hixsonorum n. sp.8
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Gerrhonotus mungerorum n. sp. alligator lizard | |
Aves | |
Pliopicus brodkorbi n. gen. n. sp.
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Nettion ogallalae n. sp.4
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Ortalis affinis n. sp.
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Actinopteri | |
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Amia calva Linnaeus 1766 bowfin | |
Aplodinotus cf. grunniens Rafinesque 1819 freshwater drum | |
Fundulus sp. Lacépède 1803 | |
? Notropis sp. Rafinesque 1818 carp-like fish | |
Ictiobus sp. Alvarado-Ortega et al. 2006 carp-like fish | |
Ictalurus lambda catfish |